<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>01-属性</title>
    <style>
        div {
            text-align: right;
            background: no-repeat  #000;
            font: 20px Consolas;
            style: d1 d3 d4 d2;
            text-decoration: underline  line-through overline;
            font-family: "微软雅黑", Arial, Colsolas, "宋体";
            style: d1 d2 d2 d2 d2;
        }

        div::before {
            content: "[" attr(href) "]" "43243";
            margin: 10px 20px 30px 40px;
            transition: all 1s;
        }
    </style>
</head>
<body>

font-family
字体名称#

font-family: 字体名称,字体名称,字体名称

style
d1 d2

content
<string>+

font-family
字体名称 [, 字体名称]*

style
d1 || d2*

my
a  b  |  c  ||  d  &&  e  f


text-decoration
none | [ underline || overline || line-through || blink ] | inherit

none | ABC | inherit
ABC = [ underline || overline || line-through || blink ]

font
'font-size' 'font-family'

style
d1 && d2 && d3 && d4

background
'background-color' || 'background-image' || 'background-repeat' || 'background-attachment' || 'background-position'

text-align
left | right | center | justify | inherit
</body>
</html>